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[CB <1479321@xxxxxxxxxxxxxxxxxx>]

Still present in 4.3.3:

[    9.819672] input: HDA Intel PCH Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input8
[    9.819721] input: HDA Intel PCH Line as /devices/pci0000:00/0000:00:1b.0/sound/card0/input9
[    9.819770] input: HDA Intel PCH Line Out as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10
[    9.819819] input: HDA Intel PCH Front Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11
[    9.819861] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1b.0/sound/card0/input13
[    9.895263] ------------[ cut here ]------------
[    9.895308] WARNING: CPU: 3 PID: 171 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_display.c:1056 intel_disable_pipe+0x2b6/0x2c0 [i915]()
[    9.895308] pipe_off wait timed out
[    9.895339] Modules linked in: kvm_intel kvm snd_hda_codec_hdmi hp_wmi snd_hda_codec_realtek snd_hda_codec_generic sparse_keymap crct10dif_pclmul crc32_pclmul snd_hda_intel snd_hda_codec i915 snd_hda_core drm_kms_helper snd_hwdep aesni_intel snd_pcm aes_x86_64 lrw snd_seq_midi snd_seq_midi_event snd_rawmidi gf128mul glue_helper drm snd_seq ablk_helper snd_seq_device snd_timer cryptd snd i2c_algo_bit wmi fb_sys_fops syscopyarea sysfillrect ie31200_edac mei_me sysimgblt serio_raw soundcore mei edac_core lpc_ich tpm_infineon 8250_fintek mac_hid video parport_pc ppdev coretemp lp parport hid_generic usbhid hid psmouse e1000e ahci r8169 libahci ptp mii pps_core fjes
[    9.895340] CPU: 3 PID: 171 Comm: kworker/u8:4 Not tainted 4.3.3-040303-generic #201512150130
[    9.895341] Hardware name: Hewlett-Packard HP Compaq Pro 6300 MT/339A, BIOS K01 v02.98 03/18/2015
[    9.895344] Workqueue: events_unbound async_run_entry_fn
[    9.895346]  0000000000000000 00000000ffcb7bbf ffff8802125437e0 ffffffff813c2b24
[    9.895347]  ffff880212543828 ffff880212543818 ffffffff8107d152 ffff880213d30000
[    9.895347]  0000000000071008 00000000fffee4ae 0000000000071008 ffff880213d9f000
[    9.895348] Call Trace:
[    9.895352]  [<ffffffff813c2b24>] dump_stack+0x44/0x60
[    9.895354]  [<ffffffff8107d152>] warn_slowpath_common+0x82/0xc0
[    9.895355]  [<ffffffff8107d1ec>] warn_slowpath_fmt+0x5c/0x80
[    9.895369]  [<ffffffffc0386f66>] intel_disable_pipe+0x2b6/0x2c0 [i915]
[    9.895379]  [<ffffffffc03872e5>] ironlake_crtc_disable+0x85/0x7c0 [i915]
[    9.895388]  [<ffffffffc0382b2c>] ? intel_crtc_disable_planes+0xdc/0xf0 [i915]
[    9.895400]  [<ffffffffc03902a0>] intel_atomic_commit+0x110/0x670 [i915]
[    9.895410]  [<ffffffffc0219945>] ? drm_atomic_check_only+0x215/0x540 [drm]
[    9.895417]  [<ffffffffc0219ca7>] drm_atomic_commit+0x37/0x60 [drm]
[    9.895421]  [<ffffffffc02dcb3f>] drm_atomic_helper_set_config+0x1bf/0x420 [drm_kms_helper]
[    9.895427]  [<ffffffffc0209162>] drm_mode_set_config_internal+0x62/0x100 [drm]
[    9.895430]  [<ffffffffc02df9c3>] restore_fbdev_mode+0xb3/0x110 [drm_kms_helper]
[    9.895433]  [<ffffffffc02e18b5>] drm_fb_helper_restore_fbdev_mode_unlocked+0x25/0x70 [drm_kms_helper]
[    9.895436]  [<ffffffffc02e192d>] drm_fb_helper_set_par+0x2d/0x50 [drm_kms_helper]
[    9.895450]  [<ffffffffc03a4fea>] intel_fbdev_set_par+0x1a/0x60 [i915]
[    9.895452]  [<ffffffff8143dc90>] fbcon_init+0x570/0x5f0
[    9.895453]  [<ffffffff814cde1a>] visual_init+0xca/0x130
[    9.895454]  [<ffffffff814cfd11>] do_bind_con_driver+0x1c1/0x3a0
[    9.895455]  [<ffffffff814d0229>] do_take_over_console+0x149/0x1a0
[    9.895456]  [<ffffffff81439b17>] do_fbcon_takeover+0x57/0xb0
[    9.895457]  [<ffffffff8143e708>] fbcon_event_notify+0x658/0x750
[    9.895459]  [<ffffffff8109d5ba>] notifier_call_chain+0x4a/0x70
[    9.895460]  [<ffffffff8109d8f7>] __blocking_notifier_call_chain+0x47/0x60
[    9.895462]  [<ffffffff8109d926>] blocking_notifier_call_chain+0x16/0x20
[    9.895463]  [<ffffffff8144439b>] fb_notifier_call_chain+0x1b/0x20
[    9.895464]  [<ffffffff8144652f>] register_framebuffer+0x20f/0x350
[    9.895467]  [<ffffffffc02e1baf>] drm_fb_helper_initial_config+0x25f/0x410 [drm_kms_helper]
[    9.895480]  [<ffffffffc03a5a6b>] intel_fbdev_initial_config+0x1b/0x20 [i915]
[    9.895481]  [<ffffffff8109f0d8>] async_run_entry_fn+0x48/0x150
[    9.895482]  [<ffffffff8109627a>] process_one_work+0x1aa/0x440
[    9.895483]  [<ffffffff8109655b>] worker_thread+0x4b/0x4c0
[    9.895484]  [<ffffffff81096510>] ? process_one_work+0x440/0x440
[    9.895485]  [<ffffffff8109c778>] kthread+0xd8/0xf0
[    9.895486]  [<ffffffff8109c6a0>] ? kthread_create_on_node+0x1a0/0x1a0
[    9.895488]  [<ffffffff817ebe4f>] ret_from_fork+0x3f/0x70
[    9.895490]  [<ffffffff8109c6a0>] ? kthread_create_on_node+0x1a0/0x1a0
[    9.895490] ---[ end trace 7fc6a10793d90eda ]---
[    9.959297] [drm:ironlake_crtc_disable [i915]] *ERROR* failed to disable transcoder B
[    9.961851] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo underrun on pch transcoder A
[    9.961866] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun
[    9.961884] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo underrun on pch transcoder B
[    9.961896] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder B FIFO underrun
[   10.019678] Console: switching to colour frame buffer device 240x67
[   10.023747] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[   10.026162] WARNING! power/level is deprecated; use power/control instead

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https://bugs.launchpad.net/bugs/1479321

Title:
  WARNING: CPU: 1 PID: 207 at /build/linux-lts-vivid-3x86XO/linux-lts-
  vivid-3.19.0/drivers/gpu/drm/i915/intel_display.c:958

Status in linux package in Ubuntu:
  Triaged

Bug description:
  Every now and than my desktop freezes for a couple of minutes.  I can
  move the mouse pointer but it gets stuck in a single display (I have
  two).

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8.1
  ProcVersionSignature: Ubuntu 3.16.0-45.60~14.04.1-generic 3.16.7-ckt14
  Uname: Linux 3.16.0-45-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Wed Jul 29 08:38:07 2015
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  DkmsStatus:
   virtualbox, 4.3.10, 3.16.0-43-generic, x86_64: installed
   virtualbox, 4.3.10, 3.16.0-45-generic, x86_64: installed
  ExtraDebuggingInterest: I just need to know a workaround
  GpuHangFrequency: Several times a week
  GpuHangReproducibility: Seems to happen randomly
  GpuHangStarted: Immediately after installing this version of Ubuntu
  GraphicsCard:
   Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller [8086:0152] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Hewlett-Packard Company Device [103c:339a]
  InstallationDate: Installed on 2015-04-10 (109 days ago)
  InstallationMedia: It
  MachineType: Hewlett-Packard HP Compaq Pro 6300 MT
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-45-generic root=UUID=88d8ecda-fb83-4942-83db-bbb2ee83be80 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  Title: Xorg freeze
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/16/2013
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: K01 v02.90
  dmi.board.asset.tag: BRJ40510V4
  dmi.board.name: 339A
  dmi.board.vendor: Hewlett-Packard
  dmi.chassis.asset.tag: BRJ40510V4
  dmi.chassis.type: 6
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvrK01v02.90:bd07/16/2013:svnHewlett-Packard:pnHPCompaqPro6300MT:pvr:rvnHewlett-Packard:rn339A:rvr:cvnHewlett-Packard:ct6:cvr:
  dmi.product.name: HP Compaq Pro 6300 MT
  dmi.sys.vendor: Hewlett-Packard
  version.compiz: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.60-2~ubuntu14.04.1
  version.libgl1-mesa-dri: libgl1-mesa-dri N/A
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx N/A
  version.xserver-xorg-core: xserver-xorg-core N/A
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
  version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
  xserver.bootTime: Wed Jul 29 08:19:44 2015
  xserver.configfile: default
  xserver.devices:
   input        Power Button         KEYBOARD, id 6
   input        Power Button         KEYBOARD, id 7
   input        CHICONY HP Basic USB Keyboard KEYBOARD, id 8
   input        PixArt USB Optical Mouse MOUSE, id 9
   input        HP WMI hotkeys       KEYBOARD, id 10
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               12387 
   vendor                                     HWP
  xserver.version: 2:1.16.0-1ubuntu1.2~trusty2

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